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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Feb 2008 19:00:13 IST
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Sun attracts Earth by gravitational force.. Earth attracts moon.. But why isn't moon being affected by Suns Gravitational force??? Please rate me as I'm new kid on the block and rate only if my Q is genuine..
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28 Feb 2008 19:01:43 IST
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28 Feb 2008 20:26:14 IST
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Look man, rates are not given for asking questions.
Rates are given for answering them.
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One who questions training, trains himself only at asking questions. |
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28 Feb 2008 21:21:18 IST
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this is because the gravitational force existing b/w 2 bodies (in this case earth & moon) is unaffected by the presence of other bodies (like sun) cheers!!!!!! rate if useful  |
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28 Feb 2008 21:26:40 IST
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Thats funny... Gravitational force is kinda similar to Magnetic force rite?.. so take 3 magnets and hold two magnets such that they JUST tend to attract,, like the force of magnetization is JUST active b/w them.. now place the third one atleast a cm away from them.. hmm not cm but a reasonable distance.. and It wil attract to them and not like it wont attract because its a two magnet system.. hmm.. so your answer is not that useful KANE..
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28 Feb 2008 21:48:16 IST
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sorry bro gravitational force is not similar to a magnetic force coz' magnetic force is a repulsive force and gravitational force is an attractive force,moreover gravitational force exists b/w line joining centre of masses whereas magnetic force exists on the whole piece of magnet
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there are numerous options besides I.I.T
<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>
<DIV ALIGN="right">Glitter Graphics</DIV></TD></TR></TABLE>
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28 Feb 2008 21:54:01 IST
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Oh. ya ya.. but when it acts only b/w two bodies.. even if a foreign body comes in between why doesn't it get affected by the earlier two bodies' gravitational attraction???? my doubt is actually this.. you're answer helped me somewhat.. but answer this and be full.. ill defiantely vote ya!!
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28 Feb 2008 22:15:08 IST
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just like electrostatic forces existing b/w 2 charges is independent of the presence of other bodies similarly gravitational force is also independent due to the presence of other bodies.every body has its own gravitational field i.e. the extent to which it can attract another body.now how can its field be affected by the presence of other bodies?the bodies which are in a planet's grav. shield get attracted towards it.hence,the presence of other bodies does not cause hindrance in its own potential to attract other bodies
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there are numerous options besides I.I.T
<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>
<DIV ALIGN="right">Glitter Graphics</DIV></TD></TR></TABLE>
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first the gravitational force attracts 2 body any where in universe
hence moon faces the force of sun
but since the distance between earth and moon is comparatively v low than distance between moon and sun
the effect is smaller(not negligible)
as a result moon is also a satellite of sun
for better look
use triangle law of vector addition by considering them at vertices's of triangle
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29 Feb 2008 07:38:12 IST
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The two answers seem to clarify my doubt!.. Kane and Bhatribhanushali... but can i accept answer of both??
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15 Mar 2008 19:45:49 IST
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Earth atracts Moon bcoz Earth is nearer to moon in comparision to distance btween moon and sun
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Hope begins in the dark, the stubborn hope that if you just show up and try to do the right thing, the dawn will come. You wait and watch and work: You don't give up. |
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17 Mar 2008 14:27:18 IST
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hey gandharva..
it's wrong to say that moon is not affected by sun's gravitationsal force....
it is of course attracted by sun's gravitational force..
but the problem is that it is much much closer to the earth....
and as you know.. gravitational force is inversely proportional to distance square..
hence.... gravitational force by earth is much more greater than that by sun...
so, force by sun is js almost negligible to force by earth.....
so, moon becomes earths satellite..
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size doesnt matter, brains do...
vignesh |
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17 Mar 2008 14:28:48 IST
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coolvignesh:
yeah i was thinking along same lines
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17 Mar 2008 14:31:24 IST
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this is just a fact...
during jurassic period, moon ws much more closer to the earth...
and it looked about 3 times bigger......
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size doesnt matter, brains do...
vignesh |
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